Average age of ten persons learning yoga is 32 years. When the age of their instructor is added, the average age becomes…

The average mark of student in 4 subjects is 75. If the student obtained 80 marks in the fifth subject, then the new ave…

Six numbers are arranged in decreasing order. The average of the first five numbers is 30 and the average of the last fi…

The average weight of three boys A, B and C is $$54\frac{1}{3}$$ kg, while the average weight of B, D and E is 53 kg. Wh…

The mean of 9 observation is 16. One more observation is included and the new mean becomes 17. The 10<sup>th</s…

The average age of 11 players of a cricket team decreases by 2 months when two new players are included in the team repl…

If the arithmetic mean of seventy-five numbers us calculated, it is 35. If each number is increased by 5, then mean of n…

The average salary of all the workers in a workshop is Rs. 8000. The average salary of 7 technicians is Rs. 12000 and th…